Buktikan identitas-identitas trigonometri berikut.a. sec^4

Saluran Edukasion 2024-03-31T00:42:00

Buktikan identitas-identitas trigonometri berikut.a. sec^4 a-sec ^2 a=tan^4 a+tan^2 a c. 3 cos^2 a-2=1-3 sin^2 a b. 1/3 sin^2 a+1/3 cos^2 a=1/3 d. 3+5 sin^2 a=8-5 cos^2 a
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